From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 27 Jun 2011 16:05:27 +0000 (-0400)
Subject: Merge LTTng commit c6485006a92b1b86fbb48c2b277732d3405295c9
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=9beb36bafc2956e34cd00512f8e327086a49fc7a;p=ust.git

Merge LTTng commit c6485006a92b1b86fbb48c2b277732d3405295c9

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/libust/ltt-events.c b/libust/ltt-events.c
index a94e8f9..42d486c 100644
--- a/libust/ltt-events.c
+++ b/libust/ltt-events.c
@@ -139,6 +139,8 @@ int ltt_channel_enable(struct ltt_channel *channel)
 {
 	int old;
 
+	if (channel == channel->session->metadata)
+		return -EPERM;
 	old = xchg(&channel->enabled, 1);
 	if (old)
 		return -EEXIST;
@@ -149,6 +151,8 @@ int ltt_channel_disable(struct ltt_channel *channel)
 {
 	int old;
 
+	if (channel == channel->session->metadata)
+		return -EPERM;
 	old = xchg(&channel->enabled, 0);
 	if (!old)
 		return -EEXIST;
@@ -159,6 +163,8 @@ int ltt_event_enable(struct ltt_event *event)
 {
 	int old;
 
+	if (event->chan == event->chan->session->metadata)
+		return -EPERM;
 	old = xchg(&event->enabled, 1);
 	if (old)
 		return -EEXIST;
@@ -169,6 +175,8 @@ int ltt_event_disable(struct ltt_event *event)
 {
 	int old;
 
+	if (event->chan == event->chan->session->metadata)
+		return -EPERM;
 	old = xchg(&event->enabled, 0);
 	if (!old)
 		return -EEXIST;